5 cases where the barcode scanner cannot scan

2023-04-03 14:06:31

Barcode scanners cannot scan bar codes and can be divided into the following cases:

First, we must first analyze whether the bar code quality printed by the bar code reaches the level. Of course, you can't buy a professional bar code detector for testing. Ordinary users can use the naked eye to identify the quality of bar code printing. As we all know, the bar code is followed by black bars and white bars. The corresponding standard is composed, so you can check whether the printed black bar is clear. If there are some white spots on the black bar, you can judge that the quality of the bar code is not very good, but the scanner with good performance can still be read out. If the black bar does not fully indicate that the bar code is completely unreadable, it is recommended to detect the device that prints the bar code.

Second, check whether the printed barcode is complete, and whether the printed barcode exceeds the boundary of the label. According to the principle of bar code scanner scanning, the bar code must be complete from left to right. Each black bar and white bar has its representative meaning. Incomplete bar code can't be scanned even if it is a high-end scanner.

Third, check what the barcode is printed, which is the type of barcode. Usually the common code on the market is code 128, code39, code93, EAN-13, etc. If the code system you print is not in this range, then you must Turn on the scanning function of the other code system of the barcode scanner. Special note: Many customers will use CODE93 code to print, some scanners do not open CODE93, so you must set it.

Fourth, check if the barcode scanner is in good condition. The method is very simple: we usually have barcodes for some goods. If the bottles, books, food packaging, these barcodes are printed, the quality is very good, if the barcode scanner can not scan these barcodes, the barcode scanner failure.

5. Check whether the printed content of the barcode is very tight. Due to the limitation of the barcode label width, some barcode contents are too long, and the scale must be reduced to be completely printed. The barcode scanner is divided into a common scanner and a high-precision barcode scanner. . If the scanner is not high-precision, almost no bar code with a high density will be scanned. This is the problem that the selected scan gun and barcode print content does not match. The method of detecting matching mismatch is very simple, and it is possible to print a barcode label with a short data content for testing.

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